I’m a Frontend Developer who builds production-ready web applications, tooling, and framework architectures. My core focus lies in modern JavaScript/TypeScript, robust tooling, automated testing, and secure, context-aware AI interactions.

📧 Contact:e.sevciuc82@gmail.com | 🔗 LinkedIn:Ecaterina Sevciuc

• Languages: TypeScript, JavaScript (ES6+), HTML5, CSS3 / Sass
• Frameworks & Libraries: React (learning), Vite, RE:DOM, Chart.js
• Tooling & Environments: Node.js, npm/yarn, Webpack, Babel, Docker & Docker Compose
• Testing & CI/CD: Jest (unit), Vitest, Cypress (E2E), GitHub Actions
• Security & AI: LLM Safety, Behavioral Threat Modeling, JSON Schema Validation

An open-source library of structured behavioral matrices, heuristics, and validation tooling designed to detect manipulation, deception, and grey-zone threats in human–AI interactions.

• What it does: Addresses the gap in static safety guardrails by focusing on psychological and tactical social engineering vectors (emotional pressure, false urgency, fake authority).
• Tech Stack: TypeScript, Node.js, AJV (JSON Schema Validation), Jest.
• Licensing: Apache 2.0 (code) & CC BY-NC 4.0 (public dataset).

A robust SPA migrated to TypeScript for collecting, grouping, analyzing, and visualizing client-side JavaScript errors in real-time.

• Key Features: Global error handlers (window.onerror, fetch interception), multi-language UI (i18n), interactive charts (Chart.js), and dual modes (Server: Express + LowDB / Demo: localStorage).
• DevOps/Tooling: Fully containerized with multi-stage Docker builds and Docker Compose (production/development profiles). Automated CI via GitHub Actions. Patched with patch-package.
• Live Demo:Try it here

A lightweight, fully accessible frontend boilerplate built with Vite, TypeScript, and BEM-style responsive CSS using clamp() fluid tokens.

• Features: Centralized API client, keyboard-accessible UI, and pre-configured Vitest environment optimized for Windows environments.

An interactive, dependency-free frontend art performance visualizing gender equity in the workplace and the invisible burden of domestic labor through dynamic SVG scales and spatial audio.

• Tech Highlights: Modular plain JS, robust audio synchronization scheduling (AudioDirector), custom gravity/spiral physics animations (Dropper), and responsive CSS variable tokens.
• Read the Story:On dev.to | 📺 Watch on YouTube

I actively write about engineering challenges, technical philosophy, and the intersections of technology, psychology, and law.

• AURA Launch:AURA (AI User Risk Assessment): A behavioral threat-intelligence framework for AI Safety — The core philosophy and launch notes of the AURA framework.
• AI Philosophy:AI: A threat or a mirror of our own mistakes? A perspective through economics and law — Exploring model alignment and safety boundaries through real-world legal and financial mechanisms.
• TS Migration:How I migrated my pet project to TypeScript, or Katya in Wonderland — A detailed technical deep-dive into refactoring a vanilla JS SPA.

• The Power of Clarity:The Human Protocol: Why clarity is the ultimate technical skill — Why clear communication and requirement analysis matter just as much as writing clean algorithms.
• Real-World Engineering Case Study:Why titles and price tags don't guarantee quality: the work speaks for itself — A production case study on rebuilding a musician’s website from legacy chaos into an accessible, high-performance platform under real delivery constraints.
• My Story:Confessions of an "Outlier" with a very strange background for Dev — My personal journey transitioning from banking and legal sectors into software engineering.
• Code Handwriting:The "Invisible" Routine: Why Every Developer Needs Their Own Code Handwriting — A deep reflection on code aesthetics, personal style, and engineering identity.

• Developer Humor:Code, Coffee, and the Soundtrack of Survival — A lighthearted look into the daily routine and survival kit of a modern developer.
• Gamified Break:A Quick Quiz for everyone who wants to take a break or just cause a little chaos — An interactive quiz built for devs looking for a fun mental reset.

• Frontend-Pro CRM — Advanced CRM frontend application.
• To-Do App — Modular SPA with offline localStorage fallback and bootstrap design.
• Students List — Full-stack practice app with a Node.js JSON-server backend.
• V-Wave Radio — Pixel-perfect, highly responsive HTML/CSS markup project.

Thank you for visiting! Feel free to explore my repositories, read my publications, or reach out for collaboration. 😊